A fake Breguet 2000 chronograph is a copy of the Type XX Aeronavale family, and it almost never runs a Swiss movement. Genuine Type XX chronographs use a Lemania-based calibre with flyback. Replicas use a Seagull ST19 or an Asian Valjoux 7750 clone. Test the flyback first: press the lower pusher while the chronograph is running. A real Type XX resets to zero and keeps running in one motion. A clone stops dead. That single test settles more questions than a loupe.
What "2000 chronograph" usually means
Sellers use "Breguet 2000" loosely. Most of the time it points at the Type XX Aeronavale ref 3800, a 39mm steel chronograph with a black dial, luminous numerals, and a date at 3. The Type XXI ref 3810 is the larger 42mm version with a central minute counter. The Transatlantique ref 3820 is a third variant with a different bezel and dial layout. Ask the seller which reference they are copying before you compare anything. Case size, subdial placement, and pusher shape differ across all three.
Prerequisites
- Digital calipers accurate to 0.1mm
- 10x jeweler's loupe
- Manufacturer photos of the reference being copied
- A stopwatch for timing chronograph accuracy
- Bright, angled light for surface inspection
Inspection procedure
- Measure the case width across the bezel and the lug-to-lug length. The ref 3800 runs 39mm wide. Replicas commonly come in 0.5mm to 1.5mm wide because the case is machined around a stock movement.
- Measure case thickness at the center. Genuine Type XX cases sit close to 13mm. A case over 14.5mm usually means a thick 7750 clone or a spacer added under the dial.
- Check the lug profile against the reference photo. Look at the angle where each lug leaves the case and the width of the lug tip. Replica lugs are often 1mm to 2mm narrower, which throws off the strap fit.
- Examine the bezel finish under angled light. Look for tool marks or a wavy polish line where the bezel meets the case.
- Inspect the crystal. Tilt the watch and look for the blue or purple anti-reflective tint common on aftermarket sapphire.
- Compare the dial printing with the loupe. Trace the minute track, the brand signature, and the "Swiss Made" line at the bottom. Replica printing is often thicker and shows ink bleed at 10x.
- Check the subdial positions. Measure the distance from the dial center to each subdial center and compare it with the reference. Clone movements push subdials off-center by a millimeter or more.
- Inspect the hands under the loupe. Check the lume fill for pits or overfill, then confirm each hand tip reaches its correct track.
- Start the chronograph, let it run 60 seconds, and compare it with a stopwatch. Stop and reset, then note whether the hand lands exactly at 12.
- Test flyback. With the chronograph running, press the lower pusher once. A genuine Type XX resets and restarts instantly. A clone either stops or needs two presses.
- Check the crown and pushers. Turn the crown to feel for grit, and confirm the pushers travel a short, even distance with a firm click.
- Inspect the caseback engraving with the loupe. Look for shallow laser text with no raised edges, then compare the reference number and serial font with the manufacturer sample.
- Weigh the watch and check the bracelet. Open the clasp and look for a stamped logo instead of a raised, polished engraving.
- Ask for a photo of the movement with the caseback removed. A manual-wind movement in a watch advertised as automatic is a mismatch. Look for a Lemania mark or a Breguet calibre number on the bridges.
Red flags that end the deal
- Stock catalog photos instead of photos of the actual watch
- No caseback or movement photos
- A water resistance claim over 50 meters on a case you cannot pressure test
- A "Swiss movement" claim paired with a price in the low hundreds
- A seller who refuses the flyback test
What a replica cannot match
Even the best Type XX copies miss three things. Flyback is the big one, because no cheap chronograph calibre offers it. Hand finishing on the bridges is the second, and it shows through a display back. The third is the stance of the case itself: a 39mm Type XX wears thin and flat, while a copy with a spacer and a stock movement sits high on the wrist. Judge the watch on your wrist and through the loupe, not on the seller's listing text.